Officials are investigating in downtown Atlanta after reports that a man claiming to have red mercury from Africa walked into the Region 2 location of the U.S. Nuclear Regulatory Commission, police said.

“We received a call regarding a male coming into the facility carrying red mercury from Africa,” Atlanta police Officer Stephanie Brown said. “We are still gathering details on the call.”

But the information they present offers more questions than answers.

Earlier today, a bridge collapsed in a fiery explosion. Was this related or are the emergency teams just on high alert?